How severe is CVE-2019-1566?

CVE-2019-1566 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2019-1566 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-1566?

CVE-2019-1566 affects Paloaltonetworks Pan-os. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-1566?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-1566 published?

CVE-2019-1566 was published on 2019-01-30 and last updated on 2026-06-17.

CVE-2019-1566

CVE-2019-1566 is a medium-severity vulnerability in Paloaltonetworks Pan-os with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Paloaltonetworks Pan-os
Published: 2019-01-30
Last modified: 2026-06-17

Description

The PAN-OS management web interface in PAN-OS 7.1.21 and earlier, PAN-OS 8.0.14 and earlier, and PAN-OS 8.1.5 and earlier, may allow an unauthenticated attacker to inject arbitrary JavaScript or HTML.

Frequently asked questions

What is CVE-2019-1566?: The PAN-OS management web interface in PAN-OS 7.1.21 and earlier, PAN-OS 8.0.14 and earlier, and PAN-OS 8.1.5 and earlier, may allow an unauthenticated attacker to inject arbitrary JavaScript or HTML.
How severe is CVE-2019-1566?: CVE-2019-1566 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2019-1566 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-1566?: CVE-2019-1566 affects Paloaltonetworks Pan-os. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-1566?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-1566 published?: CVE-2019-1566 was published on 2019-01-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*

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